<template>
  <div class="login_container">
    <div class="login_box">
      <div class="avatar_box">
        <img src="../assets/logo.png" height="200" width="200"/>
      </div>
      <!--登陆表单区-->
      <el-form ref="loginFormRef" :model="loginForm" label-width="0px" class="login_form" :rules="loginFormRules">
        <!--用户名-->
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" prefix-icon="iconfont icon-yonghuming"></el-input>
        </el-form-item>
        <!--密码-->
        <el-form-item prop="password">
          <el-input v-model="loginForm.password" type="password" prefix-icon="iconfont icon-mima"></el-input>
        </el-form-item>
        <!--按钮-->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登陆</el-button>
          <el-button type="info" @click="resetForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>
<script>
  export default {
    data () {
      return {
        loginForm: {
          username: 'admin',
          password: '123456'
        },
        loginFormRules: {
          username: [
            {required: true, message: '请输入登陆名称', trigger: 'blur'},
            {min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur'}
          ],
          password: [
            {required: true, message: '请输入登陆密码', trigger: 'blur'},
            {min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur'}
          ]
        }
      }
    },
    methods: {
      login () {
        this.$refs.loginFormRef.validate(async (valid) => {
          if (!valid) return
          const result = await this.$http.post('login', this.loginForm)
          if (result.status !== 200) return this.$message.error('登陆失败')
          this.$message.success('登陆成功')
          window.sessionStorage.setItem('token', result.headers.token)
          //切换页面
          this.$router.push('/home')
        })
      },
      resetForm () {
        this.$refs.loginFormRef.resetFields()
      }
    }
  }
</script>
<!--scoped  只在当前组件生效-->
<style lang="less" scoped>
  .login_form {
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
  }

  .login_container {
    background-color: darkblue;
    height: 100%;
  }

  .login_box {
    background-color: white;
    width: 450px;
    height: 300px;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
  }

  .avatar_box {
    height: 130px;
    width: 130px;
    border: 1px solid green;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px red;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);

    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: antiquewhite;
    }
  }

  .btns {
    display: flex;
    justify-content: flex-end;
  }
</style>
